Chemistry: The Molecular Nature of Matter
7th Edition
ISBN: 9781118516461
Author: Neil D. Jespersen, Alison Hyslop
Publisher: WILEY
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Chapter 15, Problem 3PE
Sodium cyanide solution, when poured into excess hydrochloric acid, releases hydrogen cyanide as a gas. The reaction is
Identify the conjugate acid-base pairs in this reaction. (Hint: It may be more obvious if the spectator ions are removed.)
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Indicate how the concentration of each aqueous species in the chemical equation changes to reestablish equilibrium after
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Consider a buffer solution that consists of two separate components: the weak acid, CH3COOH(aq), and its conjugate base, CH3COO¯ (aq) (added as NaCH3COO).
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Which component will react with OH-(aq) from a strong base? Write the net ionic equation for the reaction that occurs when OH-(aq) is added to the buffered solution.
Suppose that, instead of using NaOH, a base such as Ba(OH)2 had been used. What changes in the calculations would then have to be made to determine the molar concentrations of the base?
Chapter 15 Solutions
Chemistry: The Molecular Nature of Matter
Ch. 15 - Which of the following are conjugate acid-base...Ch. 15 - Write the formula of the conjugate base for each...Ch. 15 - Sodium cyanide solution, when poured into excess...Ch. 15 - One kind of baking powder contains sodium...Ch. 15 - Which of the following are amphoteric and which...Ch. 15 - The anion of sodium monohydrogen phosphate,...Ch. 15 -
Given that is a stronger acid than what is the...Ch. 15 - Given that HClO is a weaker acid than determine...Ch. 15 - Order the following groups of acids from the...Ch. 15 - Using only the periodic cable, choose the stronger...
Ch. 15 - Prob. 11PECh. 15 - Explain why one acid is weaker than the other in...Ch. 15 - In each pair, explain why one is a stronger acid...Ch. 15 - In each pair, explain why one is a weaker acid...Ch. 15 - How would you expect the acidities of the...Ch. 15 - List these acids in terms of increasing acidity:...Ch. 15 - Identify the Lewis acid and Lewis base in each...Ch. 15 - Is the fluoride ion more likely to behave as a...Ch. 15 - Brnsted-Lowry Acids and Bases How is a...Ch. 15 - Brnsted-Lowry Acids and Bases How are the formulas...Ch. 15 - Brnsted-Lowry Acids and Bases Is H2SO4 the...Ch. 15 - Brnsted-Lowry Acids and Bases What is meant by the...Ch. 15 - Brnsted-Lowry Acids and Bases Define the term...Ch. 15 - Strengths of Bronsted-Lowry Acids and Bases
15.6...Ch. 15 - Strengths of Brønsted-Lowry Acids and Bases
15.7...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases The...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases Acetic...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases Nitric...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases HCIO4...Ch. 15 - Strengths of Brnsted-Lowry Acids and Bases Formic...Ch. 15 - Periodic Trends in the Strength of Acids Explain...Ch. 15 - Periodic Trends in the Strength of Acids What are...Ch. 15 - Periodic Trends in the Strength of Acids Within...Ch. 15 - Periodic Trends in the Strength of Acids Explain...Ch. 15 - Periodic Trends in the Strength of Acids Within...Ch. 15 - Periodic Trends in the Strength of Acids Explain...Ch. 15 - Periodic Trends in the Strength of Acids Astatine,...Ch. 15 - Periodic Trends in the Strength of Acids
15.21...Ch. 15 - Periodic Trends in the Strength of Acids
15.22...Ch. 15 - Periodic Trends in the Strength of Acids Which of...Ch. 15 - Periodic Trends in the Strength of Acids Which of...Ch. 15 - Lewis Acids and Bases Define Lewis acid and Lewis...Ch. 15 - Lewis Acids and Bases In terms of atomic orbitals,...Ch. 15 - Lewis Acids and Bases
15.27 Explain why the...Ch. 15 - Lewis Acids and Bases Methylamine has the formula...Ch. 15 - Use Lewis structures to show the Lewis acid-base...Ch. 15 - Lewis Acids and Bases
15.30 Explain why the oxide...Ch. 15 - Lewis Acids and Bases The molecule SbF5 is able to...Ch. 15 - Lewis Acids and Bases In the reaction of calcium...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Prob. 35RQCh. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Prob. 40RQCh. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Acid-Base Properties of the Elements and Their...Ch. 15 - Prob. 43RQCh. 15 - Advanced Ceramics and Acid-Base Chemistry What is...Ch. 15 - Advanced Ceramics and Acid-Base Chemistry What is...Ch. 15 - Advanced Ceramics and Acid-Base Chemistry
15.46...Ch. 15 - Advanced Ceramics and Acid-Base Chemistry How does...Ch. 15 - Advanced Ceramics and Acid-Base Chemistry
15.48...Ch. 15 - Brønsted-Lowry Acids and Bases
15.49 Write the...Ch. 15 - Brønsted-Lowry Acids and Bases
15.50 Write the...Ch. 15 - Brønsted-Lowry Acids and Bases
15.51 Write the...Ch. 15 - Brnsted-Lowry Acids and Bases Write the formula...Ch. 15 - Brønsted-Lowry Acids and Bases
15.53 Identify the...Ch. 15 - Brønsted-Lowry Acids and Bases
15.54 Identify the...Ch. 15 - Periodic Trends in the Strengths of Acids Choose...Ch. 15 - Periodic Trends in the Strengths of Acids Choose...Ch. 15 - Choose the stronger acid and give your reason:...Ch. 15 - Choose the stronger acid and give your reason:...Ch. 15 - Choose the stronger acid:...Ch. 15 - Choose the stronger acid:...Ch. 15 - Lewis Acids and Bases Use Lewis symbols co diagram...Ch. 15 - Lewis Acids and Bases Use Lewis symbols to diagram...Ch. 15 - *15.63 Beryllium chloride, , exists in the solid...Ch. 15 - Aluminum chloride, AlCl3, forms molecules with...Ch. 15 - Use Lewis structures to diagram the reaction...Ch. 15 - Use Lewis structures to diagram the reaction...Ch. 15 - Use Lewis structures to show how the following...Ch. 15 - *15.68 Use Lewis structures to show how the...Ch. 15 - Acid-Base Properties of Elements and Their...Ch. 15 - Acid-Base Properties of Elements and Their Oxides...Ch. 15 - Prob. 71RQCh. 15 - Prob. 72RQCh. 15 - What is the formula of the conjugate acid of...Ch. 15 - *15.74 Using liquid ammonia as a solvent, sodium...Ch. 15 - In liquid SO2asasolvent,SOCl2reactswithNa2SO3 in a...Ch. 15 - *15.76 The following space-filling model depicts...Ch. 15 - Which of the following compounds is the stronger...Ch. 15 - Which of the two molecules below is the stronger...Ch. 15 - 15.79 Write equations that illustrate the...Ch. 15 - Hydrogen peroxide is a stronger Brnsted-Lowry acid...Ch. 15 - Sodium hydroxide, NaOH, is basic. Aluminum...Ch. 15 - Hydrazine, N2H4, is a weaker Brnsted-Lowry base...Ch. 15 - Identify the two Brnsted-Lowry acids and two bases...Ch. 15 - In the reaction in the preceding exercise, the...Ch. 15 - How would you expect the degree of ionization of...Ch. 15 - Prob. 86RQCh. 15 - A mixture is prepared containing 0.10 M of each of...Ch. 15 - 15.88 Are all Arrhenius acids Brønsted-Lowry...Ch. 15 - How could you determine whether HBr is a stronger...Ch. 15 - 15.90 Alcohols are organic compounds that have an...Ch. 15 - Acid rain, acid mine runoff, and acid leaching of...Ch. 15 - 15.92 Using just Figure 7.30, find the five most...
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- Most naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.arrow_forwardComplete each of these reactions by filling in the blanks. Predict whether each reaction is product-favored or reactant-favored, and explain your reasoning. (a) _________ (aq) + Br(aq) NH3(aq) + HBr(aq) (b) CH3COOH(aq) + CN(aq) ________ (aq) + HCN(aq) (c) ________ (aq)+H2O () NH3(aq) + OH(aq)arrow_forwardWhat is the concentration of HCN(aq) in the solution?arrow_forward
- Methanoic acid is also called formic acid. It has the chemical formula HCOOH(l). It is a colourless fuming liquid that is mainly used as a preservative. It exhibits the following equilibrium in water:HCOOH(aq) + H2O(l) → HCOO–(aq) + H3O+(aq) 3) A 35.0 mL sample of (monoprotic) lactic acid, C3H6O3, is titrated with 20.0 mL of a 4.0 x 10-4 mol/L sodium hydroxide solution. What is the pH of the resulting solution at the equivalence point, if Ka for lactic acid is 1.4 x 10-4? PLEASE HELP THIS IS VERY URGENTarrow_forwardThe acidity of a solution is measured by its pH. If HT| represents the concentration of hydrogen ions (in moles/liter) in the solution, the pH is defined by pH = – log H+ Based on careful measurements and calculations, a chemist examines two solutions and asserts: "The hydrogen ion concentration of Solution A is 37.93% greater than the hydrogen ion concentration of Solution B." If the pH of solution B is 4.36, determine the pH of Solution A. Report your answer to two decimal places. Solution A has pH equal to Number - (Report to the nearest 0.01)arrow_forwardThe pH of an aqueous solution of 3.14×10-2 M ammonium chloride, NH4Cl (aq), isarrow_forward
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- An experiment to determine the standard molar enthalpy of neutralization of a strong acid by a strong base is to be performed. Standard laboratory equipment and a supply of standardized 1.00-molar HCl and standardized 1.00-molar NaOH are available. What equipment is necessary for this experiment? What measurements should be recorded? Without performing calculations, describe how the resulting data should be utilized to obtain the standard molar enthalpy of neutralization. When a class of students performed this experiment, the average of their results was –55.0 kJ/mol. The accepted value for the standard molar enthalpy of neutralization of a strong acid by a strong base is –57.7 kJ/mol. Propose two likely sources of experimental error that could account for the result obtained by the class.arrow_forwardThe ionization constant Ka, for HCN(aq) is 4.3 x 10^-10. What is the pH of a 0.22 molar solution of sodium cyanide, which contains the cyanide ion?arrow_forward(i) Define pH in words. The strong acid HClaq has a pH value of 1, use the following equation for a strong acid: HClaq à H+aq + Cl-aq and convert the following expression to deduce the hydrogen ion concentration: pH = -log10 [H+] (ii) Use the above expression to deduce the pH of HCl (aq) given the concentration of the acid to be 4.5 mol/dm3 pH =arrow_forward
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